Sink



FIG. 1 is a perspective view taken from the top, front and right side of a sink showing my new design;

FIG. 2 is a top plan view thereof; and,

FIG. 3 is a cross-sectional view taken on line 3--3 of FIG. 2.

The fragmentary broken line showing of a counter top in FIG. 1 is for purposes of illustration only and forms no part of the claimed design. 

The ornamental design for a sink, as shown and described. 